LIVING POLYMERIZATION OF ALPHA-OLEFINS - CATALYST PRECURSOR DEACTIVATION VIA THE UNEXPECTED CLEAVAGE OF A B-C6F5 BOND

Authors
SCOLLARD JD MCCONVILLE DH RETTIG SJ
Citation
Jd. Scollard et al., LIVING POLYMERIZATION OF ALPHA-OLEFINS - CATALYST PRECURSOR DEACTIVATION VIA THE UNEXPECTED CLEAVAGE OF A B-C6F5 BOND, Organometallics, 16(8), 1997, pp. 1810-1812
Citations number
26
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
16
Issue
8
Year of publication
1997
Pages
1810 - 1812
Database
ISI
SICI code
0276-7333(1997)16:8<1810:LPOA-C>2.0.ZU;2-E
Abstract
The titanium diamide complex [ArN(CH2)(3)-NAr]TiMe2 (1a; Ar = 2,6-(Pr2 C6H3)-Pr-i) reacts with B(C6F5)(3) in pentane to give an insoluble yel low-orange solid (2a). Comp2es 2a is ct catalyst for the living polyme rization of 1-hexene. Pentane suspensions of 2a slowly evolve methane over the course of several hours to give the new penfane-soluble deriv ative [ArN(CH2)(3)NAr]Ti[CH2B-(C6F5)(2)](C6F5) (3a), which teas struct urally characterized. Addition of a B-C6F5 group across an intermediat e Ti=CH2 unit is proposed. Compound 3a is inactive for the polymerizat ion of alpha-olefins.